Improve tab locking functionality

[canack]

Tab Management System Improvements

Changes

New Methods

• Added switchPage() method to handle tab navigation with lock awareness
• Added LockTab(key string) to lock individual tabs by their key
• Added UnlockTab(key string) to unlock individual tabs by their key
• Added IsTabLocked(key string) to check if a specific tab is locked
• Added LockTabsToTheLeft() to lock all tabs to the left of current tab
• Added LockTabsToTheRight() to lock all tabs to the right of current tab
• Added UnlockTabs() to clear all tab locks (both general and individual)

Improvements

• Implemented smart tab navigation that skips locked tabs
• Added boundary checks to prevent unnecessary operations when at edge tabs
• Improved tab lock state management in header component
• Added support for both general tab locking and individual tab locking

Details

Tab Navigation

• When navigating left/right, the system now automatically skips locked tabs
• Navigation stops if all tabs in the direction are locked

Lock Management

• LockTab(key): Locks a specific tab by its key
• UnlockTab(key): Unlocks a specific tab by its key
• IsTabLocked(key): Returns true if the specified tab is locked
• LockTabsToTheLeft(): Locks all tabs from index 0 to current tab (exclusive)
• LockTabsToTheRight(): Locks all tabs from current tab + 1 to the end
• UnlockTabs(): Clears all types of locks (both general and individual)

Example Usage

s.AddPage("first", "First Tab", firstModel)
s.AddPage("second", "Second Tab", secondModel)
s.AddPage("third", "Third Tab", thirdModel)
s.AddPage("fourth", "Fourth Tab", fourthModel)
s.AddPage("fifth", "Fifth Tab", fifthModel)

// Individual tab locking
s.LockTab("second")      // Locks second tab
s.UnlockTab("second")    // Unlocks second tab
s.IsTabLocked("second")  // Checks if second tab is locked

// Bulk tab locking
s.LockTabsToTheLeft()    // Locks all tabs to the left of current tab
s.LockTabsToTheRight()   // Locks all tabs to the right of current tab
s.UnlockTabs()          // Unlocks all tabs

Testing

• Tested individual tab locking/unlocking
• Tested bulk tab locking (left/right)
• Verified tab navigation with locked tabs
• Confirmed that UnlockTabs() properly clears all locks
• Tested boundary conditions (first/last tab)